Question about 1995 Jeep Grand Cherokee
Cannot determine if leak coming from water pump or lower hose.
Posted by Anonymous on
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Posted on Jan 02, 2017
After 20 minutes, your motor usually comes up to temperature, so that's when the thermostat will open, and start circulating coolant through the radiator. (before that it is just recirculating in the motor). It also takes that long to build up heat pressure, so a leak appearing from the radiator at that point does make sense.
Removing and replacing a radiator is a fairly simple disconnect, reconnect job.
But a new radiator can be somewhat expensive. Some are made from aluminum, some copper (being that yours is a 2001, it's probably aluminum).
So the first step would be pricing out a replacement.
To actually R&R it, let the engine cool, drain the coolant, and dispose of properly, disconnect the hoses, if it's an automatic transmission, disconnect the cooler lines, and plug them with small rubber plugs, and then locate and remove the radiator hold down (it can either be the top plate, or just a couple of simple clamps, usually on the top only. Then lift out and remove the old radiator (it just sets down in the bottom locator) installation is the opposite. Set it in, connect the lines, refill with fresh coolant.
I would not try repairing the old radiator on your own. It can almost be considered an art to clean and re-solder leaks on them. You would then also need a tank and a pressurizer to test it after.
However, you can take your radiator to a radiator shop, and have them repair it for you. Depending in the leak, this can save a substantial amount of money.
A job like this should take less then an hour if you have a new part in-hand, longer if you decide to take it in to be repaired.
Posted on Aug 31, 2008
waterpump houseing/shaft seal is on the way out hence the water/coolant, running along the block. when hot the seal does so, when cold and depressurising seal doesnt.
Posted on Jan 25, 2009
Hi and welcome to FixYa,
Offhand, your described condition indicates a sticking thermostat, that is there is considerable delay before the thermostat opens. It is also possible that there is some restriction wherein the thermostat is not opening completely when the triggering temperature has been reached. As a test and to confirm, you could try temporarily removing the thermostat and operate the engine without one; observe temperature. The side effect of this test is that it would take some time to warm-up the engine, but operationally should not cause anything untoward. Of course, care has to be exercised that the gasket would still be intact.
Good luck and thank you for using FixYa.
Posted on Feb 11, 2009
SOURCE: heating problem
If you changed the thermostat yourself and have noted that the lower radiator hose is cooler than the upper radiator hose, you may have installed the thermostat incorrectly or have purchased a faulty thermostat. A lower radiator hose that does not get hot (or as hot as the upper radiator hose) is a direct indication of a faulty thermostat. Please vote for this solution if you found this to be helpful. Thanks,
Posted on Jun 01, 2009
If you have a leak near the lower radiator connection that just started, it is either a failed hose, or possibly a radiator core leak that is dripping down to that area.
If you havent changed your radiator hoses for awhile, and they feel soft, it isn't a bad idea to change them both. If you drain your radiator to change the hoses, this would be a good time to inspect the radiator, and perhaps you will find the source of the leak.
Posted on Jan 31, 2010
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